card shall expire of its own force and effect one year from the date of issuance. Upon expiration, the diver will be required to repeat the Apprentice Cave Diver program in full to subsequently dive at that level. Prerequisites: NACD Introduction to Cave or equivalent. Minimum Equipment: All equipment for Full Cave, minimum volume 142 cu. ft. in double cylinders with manifold, compass, primary light with minimum of 20 watts, two secondary reels and line arrows. Cave Diver The cave diver course is one of the most advanced certifications available today. It is taught in a minimum of four days with a minimum of eight dives. The emphasis of this course is equipment configuration, decompression problem solving, jumps, circuits, traverses, and surveying. Prerequisites: NACD Introduction to Cave or equivalent. Minimum Equipment: All equipment for Introduction to Cave, minimum double 71.2 cu. ft. tanks with manifold, compass, primary light with minimum of 20 watts, two secondary reels and line arrows. Specialty Cave Purpose: The purpose of the specialty cave diver program is to provide continuing education and experience for the fully trained cave diver under the supervision of a qualified specialty cave diving instructor. As more scuba divers pursue training and become certified cave divers, the interest and demand for training in specialized/advanced techniques in safe cave diving grows at a steady rate. It is the intent of the NACD training program to meet this challenge by providing an organized format that will professionally and safely guide the interested cave diver in the proper direction using the most current procedures. Prerequisites: NACD full cave diver or equivalent and must verify the completion of 25 or 50 non-training dives depending on specialty. Specialty courses offered are: Exploration/survey techniques Stage diving Side mount diving Submersible Diver propulsion vehicle techniques Photography Videography Currently the NACD is developing courses in Cave Trimix diving and Rebreather instruction Instructor Courses Purpose: To develop a logical progression into the training leadership of the NACD by establishing levels of progression. This insures exceptional training and performance of NACD Instructors. Four leadership levels are available. Cavern Instructor Introduction to Cave Instructor Cave Instructor Specialty Cave Instructor Board of Directors The NACD is overseen by a Board of Directors composed of seven cave divers, four Instructor Directors and three Directors. The Board of Directors is responsible for the operation of the organization and its training program. The elected officers of the